<template>
<!--  ref 一般绑定给子组件-->
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'

export default {
  name: "Scroll",
  props:{
    probeType:{
      type: Number,
      default:0
    },
    pullUpLoad:{
      type: Boolean,
      default: false
    }
  },
  data(){
    return {
      scroll:null
    }
  },
  mounted() {
    //创建BScroll对象
    this.scroll = new BScroll(this.$refs.wrapper,{
      probeType: this.probeType,
      pullUpLoad: this.pullUpLoad,
      click:true,
    })
    //监听滚动位置
   if (this.probeType === 2 || this.probeType === 3 ){
     this.scroll.on('scroll',(position)=>{
       // console.log(position)
       this.$emit('scroll',position)
     })
   }
    //监听scroll 滚动到底部
      if(this.pullUpLoad){
        this.scroll.on('pullingUp',()=>{
          this.$emit('pullingUp')
        })
      }
  },
  methods:{
    scrollTo(x, y,time=300) {
     this.scroll && this.scroll.scrollTo && this.scroll.scrollTo(x,y,time)
    },
    finishPullUp(){
      this.scroll && this.scroll.finishPullUp()
    },
    refresh(){
      // console.log('----')
      this.scroll && this.scroll.refresh()
    },
    getscrollY(){
      return this.scroll ? this.scroll.y :0
    }
  }
}

</script>

<style scoped>

</style>